【Including 21 Functions】Not only records and saves all the data you need, bike computer supports average speed, real-time speed trend, total mileage, calorie timer and temperature, but also has maintenance and low battery reminder functions (2.5V). You can press the MODE button switches the three interfaces of the bicycle computer to access all the measured values ​​and grasp the riding dynamics at any time. Please refer to the manual for setting bike computer values. 【Alternative Use of Bicycle Ⅰ/Ⅱ】The wireless bicycle computer is suitable for most types of bikes, does not fit to a indoor exercise bike and electric bicycle. If the sensor is far away from the magnet, you can use paper to shorten the distance. bike computer GPS supports green backlight, no matter day or night, it will not affect your viewing of data. If you want to stay bright at the night light, please press the MODE and SET buttons at the same time. 【Memory & Display Multiple Data】Cycle computer allows you to display multiple data on one screen, and record the riding dynamics at any time, you can touch the MODE button to switch between the three interfaces, so that you can clearly capture the data. Note, please do not watch the screen for a long time. In addition, the bicycle speedometer has an automatic memory function. After the battery is replaced, the cycling data of the bicycle computer will not be lost if it is not cleared. 【Wireless & IP65 Waterproof】The wireless bicycle computer is convenient and durable. It uses low-frequency radio transmission technology to maintain accurate data transmission for the bike speedometer after riding. The IP65 waterproof design of the bike computer does not have to worry about light rain, but do not put it in heavy rain or soak in water; when the bike accessories triggers the maintenance function, you can long press MODE to eliminate the maintenance symbol. 【Installation Easily&Quality Service】The bike computer has a simple appearance and always stays fashionable and novel. The bike computer is wirelessly designed for easier installation. Instructions for use are included in the package. A slight rattling sound of the wireless bike speedometer is normal and not a product defect. If you have any questions before ordering or during use, please feel free to contact us, we will reply in time and solve the problem for you. Surport two groups of bicycle modes, data can coexist. Bike computerThe three interfaces display different functional data, you can choose according to your needs.Small size, light weight, wireless design makes it convenient and durable.Easy to install, it is the first choice for all cycling enthusiasts.With two buttons, easy to access interface and all measured values.Widely used, compatible with any style of bike. This bicycle speedometer not only records also saves all the data you need. In any mode, press the MODE button for 6 seconds to change to another bicycle mode. The compact and lightweight wireless bicycle computer is suitable for most types of bicycles: road bicycles, mountain bicycles, folding bicycles and other ordinary bicycles. We want to tell you:1. You can rest all the value even taking off the battery.2. You must set the sensor on the front fork.3. Please install the right pole of battery.4. If you don't riding, please take off the computer, to protect it from the sunshine.5. Please check the dis